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Vifa DX25TG-05 vs. Vifa XT25TG30-04 [message #52022] Wed, 16 April 2008 23:22 Go to next message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
Anyone every try the Vifa XT25TG30-04 in a One or Two Pi in place of the standard DX25TG-05? Would the same Pi Xo work for both? Just finished the Two Pi cabs and thinking of doing something a little different......Thanks, Colin

Re: Vifa DX25TG-05 vs. Vifa XT25TG30-04 [message #52031 is a reply to message #52022] Thu, 17 April 2008 16:03 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
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Registered: January 2001
Illuminati (33rd Degree)

It's a good tweeter, but voltage sensitivity is a little too low to match with the Alpha 10. You could pad the midwoofer, but I don't think I would do that. What about one of the high sensivity ribbon tweeters? Some of them are very expensive, but some are under $100, and a few under $50. Here are two that have the right voltage sensitivity to work. Might need a smidge of padding on the Aurum Cantus, maybe 1dB or 2dB.




Re: Vifa DX25TG-05 vs. Vifa XT25TG30-04 [message #52038 is a reply to message #52031] Thu, 17 April 2008 22:44 Go to previous messageGo to next message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
Wayne, I'm really liking the Alpha 10, and I think I will try it with the Dayton Planar. Do I need to put a resistor across the tweeter like there is on the Vifa?

Re: Vifa DX25TG-05 vs. Vifa XT25TG30-04 [message #52039 is a reply to message #52038] Thu, 17 April 2008 23:25 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18792
Registered: January 2001
Illuminati (33rd Degree)

I'm not sure, but I doubt it. The impedance of ribbon tweeters is usually pretty resistive and doesn't need extra damping or impedance compensation. You may need to pad the tweeter though. If so, I think probably a standard L-Pad configuration is appropriate.


Re: Vifa DX25TG-05 vs. Vifa XT25TG30-04 [message #52051 is a reply to message #52031] Sat, 19 April 2008 19:40 Go to previous message
dB is currently offline  dB
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Registered: May 2009
Master
The main difference between the two ribbons, besides specs, is the first being (the membrane) of pure aluminum and the second a composite, more fragile in the long run, some people say. I never tested them.

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